It is a topic most pet parents would rather not talk about over dinner, but it is one of the most important aspects of keeping your dog or cat healthy: parasite control.
Intestinal worms are extremely common in pets. In fact, almost every puppy and kitten is born with or contracts worms through their mother's milk shortly after birth. Left untreated, these tiny parasites steal crucial nutrients, cause severe stomach distress, and can even pose health risks to human family members—a crossover known as zoonosis.
Here is everything you need to know about spotting, treating, and preventing intestinal worms in your pets.
4 Common Worms That Attack Pets
Different parasites require different approaches, but these are the most common uninvited guests vets encounter:
- Roundworms: Passed through mother's milk, ingesting infected soil/feces. Symptoms: Pot-bellied appearance, dull coat, vomiting worms. Zoonotic? Yes (Can cause organ/eye issues).
- Hookworms: Enter through soil penetrating skin or swallowed. Symptoms: Anemia, pale gums, dark tarry stools, lethargy. Zoonotic? Yes (Skin irritation/larva migrans).
- Tapeworms: Transmitted by swallowing infected fleas or eating rodents. Symptoms: Rice-like segments near the tail/feces, butt scooting. Zoonotic? Rarely.
Deworming Schedules
Puppies & Kittens
- 2 to 8 Weeks Old: Deworm every 2 weeks starting at 2 or 3 weeks of age until they reach 8 weeks. This targets roundworms passed down from the mother.
- 2 to 6 Months Old: Deworm monthly up to 6 months of age. Vets often combine this with routine early health checks and monthly flea/heartworm preventatives.
- 6 Months & Older: Transition to an adult schedule based on their lifestyle (typically every 3 to 6 months or continuous monthly broad-spectrum preventatives).
Adult Dogs & Cats
Adult pets constantly explore outdoors, sniff ground surfaces, or hunt small prey.
- Standard Risk (Indoor Pets): Deworm 1 to 2 times a year, or rely on annual fecal screenings during wellness checkups.
- High Risk (Outdoor/Hunting Pets): Deworm every 3 to 6 months or use monthly broad-spectrum preventatives.
Important Tips for Pet Owners
- Don't Rely Solely on "Seeing" Worms: Most pets with worm infections show zero visible parasites in their stool until the infection is severe. The eggs are microscopic! Annual fecal tests at your vet clinic are the most reliable way to detect microscopic eggs early.
- Flea Control IS Worm Control: Tapeworms are transmitted when pets swallow fleas while grooming. If you treat tapeworms without fixing a flea infestation, your pet will get re-infected within weeks.
- Practice Strict Yard Hygiene: Scoop dog waste immediately and keep litter boxes clean daily. Washing hands after outdoor playtime reduces the chance of children or adults accidentally ingesting microscopic parasite eggs.
A consistent routine keeps your pet full of energy, absorbs their nutrients properly, and keeps your entire household safe!
